PROBLEM TO BE SOLVED: To provide a workpiece processing apparatus capable of preventing drying, aggregation, sedimentation and the like of chemical liquid and achieving miniaturization.SOLUTION: In a work processing apparatus 5 having a chemical liquid supply unit 7 for supplying a chemical liquid to a processing unit 6 and the processing unit 6 for processing or processing a work, the chemical liquid supply unit 7 includes a plurality of chemical liquid storage bags 50 filled with a chemical liquid, a bag holding portion 52 in which the plurality of chemical liquid storage bags 50 are mounted and held； and a liquid feeding unit in which the plurality of liquid medicine storing bags 50 are detachably connected, the liquid feeding unit being configured to feed chemical liquid from the liquid medicine storing bag 50 to the processing unit 6. The chemical liquid storage bag 50 has a port portion 53 which is formed in a bag shape in which the flexible resin sheets are overlapped with each other and in which the peripheral portion is welded, and that communicates with the outside, and the valve fitted joint 54 is attached to the port portion 53.SELECTED DRAWING: Figure 2【課題】薬液の乾燥、凝集、沈殿等を防止でき、小型化も達成できるワーク加工装置を提供する。【解決手段】処理部６に薬液を供給する薬液供給部７と、ワークの加工もしくは処理を行う前記処理部６を有するワーク加工装置５において、薬液供給部７は、薬液が充填される複数の薬液収納バッグ５０と、複数の薬液収納バッグ５０が装着、保持されるバッグ保持部５２と、複数の薬液収納バッグ５０が着脱自在に接続され、薬液収納バッグ５０から処理部６に薬液を送り込む送液部を有し、薬液収納バッグ５０は、フレキシブル樹脂シートが重ね合わされ、周縁部を溶着された袋状をなすと共に、外部に連通するポート部５３を有し、ポート部５３にバルブ付き継手５４が装着された薬液収納バッグ５０であることを特徴とする。【選択図】図２
